Card-index.



BEST AVAILABLECQPY A. NYVALL.

CARD INDEX APPLICATION P um JULY9,1912.

Patented June 9, 1914.

Wade/was: I I 51mm M 0;

I A V ggvlwi fitfozuu I "4 V M is, W

he-groups each Of course l main groups av whole :he "ml the main 'red mimner", thecerd cl. first in m to o (,llrlltlilml hater ards and then 111 the oth r airs roo'ves icing ion If s icremsedjof. f mnsthe in both dih. grooves ement of n cnrdfrom V, m'or main ljfl lotect '-misfiled,

and. f of V the sub- .hc locate rs; with.

va rymg me rongm it nnnlhw o'ii cnmhr do not restrict myself to such detail fires the: t

nronizcting into It is clear that the filing may be done by unskilled clerks and the mistakes, if any readily ascertained by a mere inspection.

'As it is obvious that the details as illhzs treated may be a greatly varied without dearting from the principle of my inventhm,

ther than the scope of the appended; c. demand.

e What I claim and desire to secure by m1 ters Patent is:

v 1. A card index comprising :1 series of cards arranged in groups, notches in the no to per marglns of the cards of each gron regristeringwith each other but displaced with reference to the'notches in the upper mar gins of the cards-of the adjacent group 2; A card index comprising a series of cards arranged in sub-groups and main groups, notches in the unper margins of the cards of each sub- 011p registering with each other but disp aced withreference to the notches in the upper margins of the 60 cards of the adjacent subgroup of the some main group and other notches in the Lima-c1- margins of the cards of each. main group registering with each other but disphnw-d vith reference to the notches in the on r 65 n'xal'glns of the cards of the mljoccnt mi. group.

In testimony whereof I have eip; specification in the presence of two KK'G. LE Ann, IVAN KONIGBBERG. 

